Windmill



I 10 219,43 J$ MI:,, m

Aug. 25, 1931. w. s. McRAE 2,820,818

WINDMILL Filed Jan. 7 1950 2 Sheets-Sheet 1 INVENTOR ATTORNEY Aug. 25, 1931. w, 5, Mom; 1,820,818

WINDMILL Filed Jan. 7, 1930 2 Sheets-Sheet 2 10 the wheel and the apparatus in accordance with this invention;

wlwmsm or s rflnavm nnizona i i i Ap p1icatio n filed J'anuary7,

*My present invention has reference to a windmillof the] turbine type, and my pri-1 mary object is the provision of'means in connectionwith the wind wheel which is in the 5 nature' ofa shield that is automatically ex:

{tended and restricted by the force'of the wind withrespect to the cup shaped'blades of the wind'wheehso-that thezsame serves as agoverning device for controllingthe rotation of to which the windwheel is attached, 5 I f To the attainmentof the foregoing and 1 "other objects which will present themselves V the invention resides 'infthis and othernovel I 15 features of construction which will hereinafter he definitely described,illustrated and set forth .in detail: in the accompanying In the drawings: 7

Figure 1 is a side elevation'ofxa mill Figure 2is atop-planview thereof. I V

v Figure 3 is a sectional'iviewonthe' l'ne 3 3 of Figure 1.

:Thesupport or, tower of the improvement is indicated by the numeral liand isofthe 'iordinary construction.,. There is passed centrally through the top of the tower and journaled in suitable-Lbearingsin said tower the, shaft 2' which, in the showingofthe drawings 1 has itsl'ofwe'r end, above its lower'bearing pro; v v .videdj with a gearwheel3 that is in mesh with a'larger gea'r4thatis mountedon a cross shaft that carries the pulley for the mechaman, that is ,operated' by the i wheel. {l The shaft 2,:above its upper bearing 5 is fixedto i thehub 6 ofthe body of thewindwheeh The struction' and the advantages thereof will be i apparent to those skilled in the artto which I igbodyofthe wheel is in the nature of a cylin der 7 which is connected' to the hubby radiating spokes 8. on; the outer face of-the cylindrical body 7 there-is fixed the blades '8', each ofwhich being, curved in the same direction and} the outer edges'of the blades, at the top 1 andbottom thereof arebraced bywing-mem- 45 here 9, respectively."

1 Both above andbelowthe windwheel there is rotatablymountedontheshaftthecone Y necting arms of substantiallyrectangular -mem'bers'10; These members have their corners connected' by suitable and preferably 15 seen m5} iiaiso'. I

cross sectionally rounded elements 11 and.

secured between and "extending from are the'cornerslofthemembersflO there are plates orv brackets 12 between which there is fixed K. A

i "551 i if To theconnecting rods 11, located laterally the inner end of the tail vane 13.

of the'tail vane 13 there are pivotally secured,

plates 14 and 15, respectively, the plate 14 being of a length materially greater than that of the plate 15. The plate 14 as a matter-of fact is of alength at leastequalling the distance between'two of the corners of the members 10. The plate 14 has pivotally secured to its outer end another plate16, and there I i 65;-

are pivotal rod connections 17 between the free end of the plate'16 and the free'end of the comparatively narrow plate 15. The plate 16 is of a length greater than that of] the-plate 15 and the plates 14 and 16 serve as g blades or vanes 8 of the windmill againstthe k influence of the current of air which is directt 'ed through the remaining blades between the 1 Q 1 rods 17." The turning'of the windwheel will i i l have a tendency to'hold the'plates that com- I,

shields for protecting the majorityof the prise the shieldin' the position disclosed by Figure 3 of the drawings but anincreasedrp velocity of thewind will act against the shield plates 14 and 16 to swing the same to" close certainof the blades or vanes of the wind wheel or to the fullshieldingposition disclosed by the dotted lines in Figure 2' of it I i the drawings, and in this manner it will be} j noted that this simple device provides an automatic regulation for, the speed of the} wheel. v I I j It is thoughtthat thesimplicity of the con: I

such invention relates so that further de tailed description will not be required,-but

Obviously I do not Wish o be restricted to v the precise details herein'set forth and, therea fall within the scope of what lclaim.

'Having'described theinvention, I claim', i

A' wind mill comprising upper and lower 7 frames, one positioned above the other in; spaced relation and mounted for movement, 0"

about a Vertical axis, members connecting the frames at their corners, a Vane secured to the frames, a Wind wheel' journalled between the frames, shielding plates hinged toa pair of eppositely disposedmembers and one of said plates of a greater length than the other plate and of a length substantiallyequalto the distance; between apair of corners of said frames, athird shield plate hinged to the free end of the plate having the greatest 7 length of said first named plates, and spaced rods hinged to the fr-ee end of the third plate a V and t0 thefree end Of the first named plate having the shorter length to cause the plates "to movein unison for-cdntrollingthe speed fi rotation of the wind wheel during Wind 'cnrrents of varyingvelocity.

g In testimony whereef. I affix my signatnre.

f jj l i p v YIWALTERS. MORAE; 

